I want go with the pig. But normally, unless something is very local, if it is just a one day event it is not fuel/effort effective. But this is not a one-day show it is an afternoon show. So I might go in the Rover, which is not really very interesting. But I have no doubt that the establishment itself will be exceedingly interesting.
I always like shows at establishments, sometimes years later you look back at the photos & see quite common place vehicles are collectors items. At least the markings & accessories will be authentic reference points so even like to take pictures of the mundane, which once caused me to be ejected from a site as the authorities couldn't believe anyone would take an interest in mundane in service equipment.